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Finding the Fourth Proportional to 3,198.84, 4,414.47 and 1,939.65

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Solution

The fourth proportional to 3,198.84, 4,414.47 and 1,939.65 is: 2,676.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.84 : 4,414.47 = 1,939.65 : x
  2. Step 2: Convert to fraction form
    3,198.84/4,414.47 = 1,939.65/x
  3. Step 3: Cross multiply
    3,198.84x = 4,414.47 × 1,939.65
  4. Step 4: Simplify right side
    3,198.84x = 8,562,526.74
  5. Step 5: Solve for x
    x = 8,562,526.74/3,198.84
  6. Step 6: Final answer
    x = 2,676.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.